Body Jewelry Size & Aftercare Guide: Gauges, Sizes & Materials
Choosing body jewelry is easier when you understand two things: gauge (how thick the jewelry is) and size (its length or diameter). This guide breaks down standard sizes by piercing, which materials are safest for sensitive skin, and how to care for a piercing so it heals well. Everything here is general reference — if a piercing is new or giving you trouble, follow the advice of your professional piercer.
Understanding gauge (thickness)
Gauge measures the thickness of the jewelry's bar or wire. The system runs backwards from what you'd expect: a higher gauge number means thinner jewelry. A 20G nose stud is delicate and thin; a 14G belly bar is noticeably thicker. Wearing the correct gauge matters — jewelry that's too thin can migrate or tear a piercing, while forcing a thicker gauge into a smaller channel is painful and risky.
Standard gauge & size by piercing
| Piercing | Typical gauge | Common size |
|---|---|---|
| Earlobe | 20G–18G | — |
| Nostril | 20G–18G | — |
| Septum | 16G–14G | 8mm (5/16") |
| Helix / cartilage | 16G | 6–8mm |
| Tragus | 16G | 6mm |
| Industrial | 14G | 32–38mm |
| Navel / belly | 14G | 10–11mm (3/8"–7/16") |
| Nipple | 14G | 12–16mm |
| Tongue | 14G | 16–19mm |
| Labret / lip | 16G–14G | 8–10mm |
These are the most common starting points. Individual anatomy varies, so an existing well-fitting piece is always the most reliable reference for your own size.
Materials — and what to wear on sensitive skin
- Implant-grade titanium (ASTM F-136): the gold standard for healing and sensitive skin — nickel-free, lightweight, and biocompatible.
- 316L surgical steel: durable and widely used for healed piercings; contains trace nickel, so those with a known nickel allergy may prefer titanium.
- Solid 14k+ gold: beautiful and body-safe when it's solid (not plated).
- Gold PVD-plated steel: a hard, long-wearing gold-tone finish over steel — great for the look at a lower price on healed piercings.
- Flexible bioplast / PTFE: soft, metal-free bars that are popular for pregnancy navel piercings and metal sensitivities.
How to find your size
- Match a piece you already wear. The fastest, most accurate method: measure the gauge and length/diameter of jewelry that already sits comfortably.
- Measure the wearable area. For a barbell, that's the bar length between the balls; for a ring, the inner diameter.
- Account for healing. Fresh piercings often use slightly longer bars to allow for swelling; once healed, a shorter, closer fit is more comfortable and less prone to snagging.
Aftercare basics
Most piercing problems come from over-handling, not under-cleaning. Keep it simple:
- Clean with sterile saline once or twice a day. Avoid alcohol, hydrogen peroxide, and harsh soaps, which irritate healing tissue.
- Don't twist or rotate the jewelry — that was old advice and it actually disrupts healing.
- Hands off. Only touch it with clean hands, and let it be the rest of the time.
- Leave the starter jewelry in until the piercing is fully healed before changing it.
Approximate healing times
| Piercing | Typical healing |
|---|---|
| Earlobe | 6–8 weeks |
| Nostril | 4–6 months |
| Cartilage / helix | 6–12 months |
| Navel | 6–12 months |
| Nipple | 6–12 months |
| Tongue | 4–6 weeks |
Healing varies from person to person. A piercing can look healed on the surface before the channel is fully mature, so give it the full window before switching jewelry.
Frequently asked questions
What gauge is a belly button ring? Almost always 14G, usually with a 10–11mm curved barbell.
Is surgical steel safe for sensitive ears? It's fine for most healed piercings, but if you have a nickel allergy, implant-grade titanium is the safer choice.
Can I size down after healing? Yes — many people switch to a shorter bar once swelling is gone for a sleeker, snag-free fit.
What's the difference between plated and solid gold? Plated is a gold finish over another metal (great value on healed piercings); solid gold is body-safe throughout and ideal for sensitive or healing piercings.
Shop by fit
Browse our full range of studs, barbells, hoops, and dangles in the Jewelry & Accessories collection — each product page lists its gauge, material, and size so you can match your fit with confidence.